Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2022 12 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 12/23/2022   22:25:04   (   0.00,-127.42) (   0.19,-126.63)   89.65                80
 12/26/2022   10:26:31   (  -0.00,-127.58) (  -0.00,-127.60)    2.69                80
 12/28/2022   22:33:27   (   0.01,-127.59) (  -0.23,-128.61)  115.72                80
 12/29/2022   22:12:28   (   0.01,-127.63) (   0.77,-124.17)  393.94                80
 12/31/2022   10:34:54   (  -0.02,-127.75) (   0.41,-129.58)  208.53                80
 01/01/2023   10:19:14   (  -0.01,-127.78) (  -0.59,-125.14)  301.21                80
 01/02/2023   22:41:50   (   0.01,-127.76) (  -0.62,-130.58)  321.51                80
 01/03/2023   22:20:50   (   0.01,-127.79) (   0.39,-126.14)  187.64                80
 01/05/2023   10:43:16   (  -0.01,-127.90) (   0.79,-131.55)  416.30                80